“…In 2017, the committee included Yochai Adir (Israel), Katerina Antoniou (Greece), Harold Collard (USA), Marc Humbert (France), Joel Moss (USA), Venerino Poletti (Italy), Ganesh Raghu (USA), Gérald Simonneau (France), Carlo Vancheri (Italy), Athol Wells (UK) and Sergio Harari (Italy, Congress Chair). As for past editions of the meeting, when selected articles were published in the ERR (for editorials, see [11][12][13]), the current issue of the ERR contains articles based on some presentations from the 7th meeting, to affirm the engagement of the ERR in this area and more generally account for the space devoted by all ERS publications to rare diseases and orphan drugs as well as rare conditions linked to the most frequent pathologies (severe asthma, rare thoracic cancers and others), which share with rare diseases some aspects of research and methodology [11,14].…”